最近做一个Swing软件，其中要用到日期时间选择器（DateChooser），但是Swing中没有现成的日期时间选择器可用，于是在网上搜索了一下，找了一个比较靠谱的例子，因为任务比较紧，所以没有时间细致地美化，自己修改了几处，增加了一些注释，增加了几个功能（如：增加了确定、取消按钮；添加了取消时JButton的Text恢复选择前的日期时间；增加了得到当前日期时间格式化器等），现在放出来，欢迎有时间的同学继续完善。

先上一张效果图



代码如下：

import java.awt.BorderLayout;  import java.awt.Color;  import java.awt.Cursor;  import java.awt.Dimension;  import java.awt.FlowLayout;  import java.awt.Font;  import java.awt.Frame;  import java.awt.GridLayout;  import java.awt.Point;  import java.awt.Toolkit;  import java.awt.event.ActionEvent;  import java.awt.event.ActionListener;  import java.text.ParseException;  import java.text.SimpleDateFormat;  import java.util.Calendar;  import java.util.Date;    import javax.swing.JButton;  import javax.swing.JDialog;  import javax.swing.JFrame;  import javax.swing.JLabel;  import javax.swing.JPanel;  import javax.swing.JSpinner;  import javax.swing.SpinnerNumberModel;  import javax.swing.SwingConstants;  import javax.swing.SwingUtilities;  import javax.swing.border.LineBorder;  import javax.swing.event.ChangeEvent;  import javax.swing.event.ChangeListener;    /**   *   * YouAreStupid 收集网上靠谱的例子，修改后的Swing日期   * 时间选择器,因为修改时间匆忙，希望有时间的朋友继续改进。   * 例子原作者:zjw   * 修改/完善：YouAreStupid   */  public class DateChooserJButton extends JButton {        private DateChooser dateChooser = null;      private String preLabel = "";      private String originalText = null;      private SimpleDateFormat sdf = null;        public DateChooserJButton() {          this(getNowDate());      }        public DateChooserJButton(String dateString) {          this();          setText(getDefaultDateFormat(), dateString);          //保存原始是日期时间          initOriginalText(dateString);      }        public DateChooserJButton(SimpleDateFormat df, String dateString) {          this();          setText(df, dateString);            //记忆当前的日期格式化器          this.sdf = df;            //记忆原始日期时间          Date originalDate = null;          try {              originalDate = df.parse(dateString);          } catch (ParseException ex) {              originalDate = getNowDate();          }          initOriginalText(originalDate);      }        public DateChooserJButton(Date date) {          this("", date);          //记忆原始日期时间          initOriginalText(date);      }        public DateChooserJButton(String preLabel, Date date) {          if (preLabel != null) {              this.preLabel = preLabel;          }          setDate(date);          //记忆原始是日期时间          initOriginalText(date);            setBorder(null);          setCursor(new Cursor(Cursor.HAND_CURSOR));          super.addActionListener(new ActionListener() {                @Override              public void actionPerformed(ActionEvent e) {                  if (dateChooser == null) {                      dateChooser = new DateChooser();                  }                  Point p = getLocationOnScreen();                  p.y = p.y + 30;                  dateChooser.showDateChooser(p);              }          });      }        private static Date getNowDate() {          return Calendar.getInstance().getTime();      }        private static SimpleDateFormat getDefaultDateFormat() {          return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");      }        /**       * 得到当前使用的日期格式化器       * @return 日期格式化器       */      public SimpleDateFormat getCurrentSimpleDateFormat(){          if(this.sdf != null){              return sdf;          }else{              return getDefaultDateFormat();          }      }          //保存原始是日期时间      private void initOriginalText(String dateString) {          this.originalText = dateString;      }        //保存原始是日期时间      private void initOriginalText(Date date) {          this.originalText = preLabel + getDefaultDateFormat().format(date);      }        /**        * 得到当前记忆的原始日期时间       * @return 当前记忆的原始日期时间（未修改前的日期时间）       */      public String getOriginalText() {          return originalText;      }        // 覆盖父类的方法      @Override      public void setText(String s) {          Date date;          try {              date = getDefaultDateFormat().parse(s);          } catch (ParseException e) {              date = getNowDate();          }          setDate(date);      }        public void setText(SimpleDateFormat df, String s) {          Date date;          try {              date = df.parse(s);          } catch (ParseException e) {              date = getNowDate();          }          setDate(date);      }        public void setDate(Date date) {          super.setText(preLabel + getDefaultDateFormat().format(date));      }        public Date getDate() {          String dateString = getText().substring(preLabel.length());          try {              SimpleDateFormat currentSdf = getCurrentSimpleDateFormat();              return currentSdf.parse(dateString);          } catch (ParseException e) {              return getNowDate();          }      }        /**         * 覆盖父类的方法使之无效       * @param listener 响应监听器       */      @Override      public void addActionListener(ActionListener listener) {      }        /**       * 内部类，主要是定义一个JPanel，然后把日历相关的所有内容填入本JPanel，       * 然后再创建一个JDialog，把本内部类定义的JPanel放入JDialog的内容区       */      private class DateChooser extends JPanel implements ActionListener, ChangeListener {            int startYear = 1980; // 默认【最小】显示年份          int lastYear = 2050; // 默认【最大】显示年份          int width = 390; // 界面宽度          int height = 210; // 界面高度          Color backGroundColor = Color.gray; // 底色          // 月历表格配色----------------//          Color palletTableColor = Color.white; // 日历表底色          Color todayBackColor = Color.orange; // 今天背景色          Color weekFontColor = Color.blue; // 星期文字色          Color dateFontColor = Color.black; // 日期文字色          Color weekendFontColor = Color.red; // 周末文字色          // 控制条配色------------------//          Color controlLineColor = Color.pink; // 控制条底色          Color controlTextColor = Color.white; // 控制条标签文字色          Color rbFontColor = Color.white; // RoundBox文字色          Color rbBorderColor = Color.red; // RoundBox边框色          Color rbButtonColor = Color.pink; // RoundBox按钮色          Color rbBtFontColor = Color.red; // RoundBox按钮文字色          /** 点击DateChooserButton时弹出的对话框，日历内容在这个对话框内 */          JDialog dialog;          JSpinner yearSpin;          JSpinner monthSpin;          JSpinner daySpin;          JSpinner hourSpin;          JSpinner minuteSpin;          JSpinner secondSpin;          JButton[][] daysButton = new JButton[6][7];            DateChooser() {                setLayout(new BorderLayout());              setBorder(new LineBorder(backGroundColor, 2));              setBackground(backGroundColor);                JPanel topYearAndMonth = createYearAndMonthPanal();              add(topYearAndMonth, BorderLayout.NORTH);              JPanel centerWeekAndDay = createWeekAndDayPanal();              add(centerWeekAndDay, BorderLayout.CENTER);              JPanel buttonBarPanel = createButtonBarPanel();              this.add(buttonBarPanel, java.awt.BorderLayout.SOUTH);          }            private JPanel createYearAndMonthPanal() {              Calendar c = getCalendar();              int currentYear = c.get(Calendar.YEAR);              int currentMonth = c.get(Calendar.MONTH) + 1;              int currentHour = c.get(Calendar.HOUR_OF_DAY);              int currentMinute = c.get(Calendar.MINUTE);              int currentSecond = c.get(Calendar.SECOND);                JPanel result = new JPanel();              result.setLayout(new FlowLayout());              result.setBackground(controlLineColor);                yearSpin = new JSpinner(new SpinnerNumberModel(currentYear, startYear, lastYear, 1));              yearSpin.setPreferredSize(new Dimension(48, 20));              yearSpin.setName("Year");              yearSpin.setEditor(new JSpinner.NumberEditor(yearSpin, "####"));              yearSpin.addChangeListener(this);              result.add(yearSpin);                JLabel yearLabel = new JLabel("年");              yearLabel.setForeground(controlTextColor);              result.add(yearLabel);                monthSpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1, 12, 1));              monthSpin.setPreferredSize(new Dimension(35, 20));              monthSpin.setName("Month");              monthSpin.addChangeListener(this);              result.add(monthSpin);                JLabel monthLabel = new JLabel("月");              monthLabel.setForeground(controlTextColor);              result.add(monthLabel);                //如果这里要能够选择,会要判断很多东西,比如每个月分别由多少日,以及闰年问题.所以,就干脆把Enable设为false              daySpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1, 31, 1));              daySpin.setPreferredSize(new Dimension(35, 20));              daySpin.setName("Day");              daySpin.addChangeListener(this);              daySpin.setEnabled(false);              daySpin.setToolTipText("请下下面的日历面板中进行选择哪一天！");              result.add(daySpin);                JLabel dayLabel = new JLabel("日");              dayLabel.setForeground(controlTextColor);              result.add(dayLabel);                hourSpin = new JSpinner(new SpinnerNumberModel(currentHour, 0, 23, 1));              hourSpin.setPreferredSize(new Dimension(35, 20));              hourSpin.setName("Hour");              hourSpin.addChangeListener(this);              result.add(hourSpin);                JLabel hourLabel = new JLabel("时");              hourLabel.setForeground(controlTextColor);              result.add(hourLabel);                minuteSpin = new JSpinner(new SpinnerNumberModel(currentMinute, 0, 59, 1));              minuteSpin.setPreferredSize(new Dimension(35, 20));              minuteSpin.setName("Minute");              minuteSpin.addChangeListener(this);              result.add(minuteSpin);                JLabel minuteLabel = new JLabel("分");              hourLabel.setForeground(controlTextColor);              result.add(minuteLabel);                secondSpin = new JSpinner(new SpinnerNumberModel(currentSecond, 0, 59, 1));              secondSpin.setPreferredSize(new Dimension(35, 20));              secondSpin.setName("Second");              secondSpin.addChangeListener(this);              result.add(secondSpin);                JLabel secondLabel = new JLabel("秒");              hourLabel.setForeground(controlTextColor);              result.add(secondLabel);                return result;          }            private JPanel createWeekAndDayPanal() {              String colname[] = {"日", "一", "二", "三", "四", "五", "六"};              JPanel result = new JPanel();              // 设置固定字体，以免调用环境改变影响界面美观              result.setFont(new Font("宋体", Font.PLAIN, 12));              result.setLayout(new GridLayout(7, 7));              result.setBackground(Color.white);              JLabel cell;                for (int i = 0; i < 7; i++) {                  cell = new JLabel(colname[i]);                  cell.setHorizontalAlignment(JLabel.RIGHT);                  if (i == 0 || i == 6) {                      cell.setForeground(weekendFontColor);                  } else {                      cell.setForeground(weekFontColor);                  }                  result.add(cell);              }                int actionCommandId = 0;              for (int i = 0; i < 6; i++) {                  for (int j = 0; j < 7; j++) {                      JButton numberButton = new JButton();                      numberButton.setBorder(null);                      numberButton.setHorizontalAlignment(SwingConstants.RIGHT);                      numberButton.setActionCommand(String.valueOf(actionCommandId));                      numberButton.addActionListener(this);                      numberButton.setBackground(palletTableColor);                      numberButton.setForeground(dateFontColor);                      if (j == 0 || j == 6) {                          numberButton.setForeground(weekendFontColor);                      } else {                          numberButton.setForeground(dateFontColor);                      }                      daysButton[i][j] = numberButton;                      result.add(numberButton);                      actionCommandId++;                  }              }                return result;          }            /** 得到DateChooserButton的当前text，本方法是为按钮事件匿名类准备的。 */          public String getTextOfDateChooserButton() {              return getText();          }            /** 恢复DateChooserButton的原始日期时间text，本方法是为按钮事件匿名类准备的。 */          public void restoreTheOriginalDate() {              String originalText = getOriginalText();              setText(originalText);          }            private JPanel createButtonBarPanel() {              JPanel panel = new JPanel();              panel.setLayout(new java.awt.GridLayout(1, 2));                JButton ok = new JButton("确定");              ok.addActionListener(new ActionListener() {                    @Override                  public void actionPerformed(ActionEvent e) {                      //记忆原始日期时间                      initOriginalText(getTextOfDateChooserButton());                      //隐藏日历对话框                      dialog.setVisible(false);                  }              });              panel.add(ok);                JButton cancel = new JButton("取消");              cancel.addActionListener(new ActionListener() {                    @Override                  public void actionPerformed(ActionEvent e) {                      //恢复原始的日期时间                      restoreTheOriginalDate();                      //隐藏日历对话框                      dialog.setVisible(false);                  }              });                panel.add(cancel);              return panel;          }            private JDialog createDialog(Frame owner) {              JDialog result = new JDialog(owner, "日期时间选择", true);              result.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);              result.getContentPane().add(this, BorderLayout.CENTER);              result.pack();              result.setSize(width, height);              return result;          }            void showDateChooser(Point position) {              Frame owner = (Frame) SwingUtilities.getWindowAncestor(DateChooserJButton.this);              if (dialog == null || dialog.getOwner() != owner) {                  dialog = createDialog(owner);              }              dialog.setLocation(getAppropriateLocation(owner, position));              flushWeekAndDay();              dialog.setVisible(true);          }            Point getAppropriateLocation(Frame owner, Point position) {              Point result = new Point(position);              Point p = owner.getLocation();              int offsetX = (position.x + width) - (p.x + owner.getWidth());              int offsetY = (position.y + height) - (p.y + owner.getHeight());                if (offsetX > 0) {                  result.x -= offsetX;              }                if (offsetY > 0) {                  result.y -= offsetY;              }                return result;          }            private Calendar getCalendar() {              Calendar result = Calendar.getInstance();              result.setTime(getDate());              return result;          }            private int getSelectedYear() {              return ((Integer) yearSpin.getValue()).intValue();          }            private int getSelectedMonth() {              return ((Integer) monthSpin.getValue()).intValue();          }            private int getSelectedHour() {              return ((Integer) hourSpin.getValue()).intValue();          }            private int getSelectedMinite() {              return ((Integer) minuteSpin.getValue()).intValue();          }            private int getSelectedSecond() {              return ((Integer) secondSpin.getValue()).intValue();          }            private void dayColorUpdate(boolean isOldDay) {              Calendar c = getCalendar();              int day = c.get(Calendar.DAY_OF_MONTH);              c.set(Calendar.DAY_OF_MONTH, 1);              int actionCommandId = day - 2 + c.get(Calendar.DAY_OF_WEEK);              int i = actionCommandId / 7;              int j = actionCommandId % 7;              if (isOldDay) {                  daysButton[i][j].setForeground(dateFontColor);              } else {                  daysButton[i][j].setForeground(todayBackColor);              }          }            private void flushWeekAndDay() {              Calendar c = getCalendar();              c.set(Calendar.DAY_OF_MONTH, 1);              int maxDayNo = c.getActualMaximum(Calendar.DAY_OF_MONTH);              int dayNo = 2 - c.get(Calendar.DAY_OF_WEEK);              for (int i = 0; i < 6; i++) {                  for (int j = 0; j < 7; j++) {                      String s = "";                      if (dayNo >= 1 && dayNo <= maxDayNo) {                          s = String.valueOf(dayNo);                      }                      daysButton[i][j].setText(s);                      dayNo++;                  }              }              dayColorUpdate(false);          }            /**           * 选择日期时的响应事件           */          @Override          public void stateChanged(ChangeEvent e) {              JSpinner source = (JSpinner) e.getSource();              Calendar c = getCalendar();              if (source.getName().equals("Hour")) {                  c.set(Calendar.HOUR_OF_DAY, getSelectedHour());                  setDate(c.getTime());                  return;              }              if (source.getName().equals("Minute")) {                  c.set(Calendar.MINUTE, getSelectedMinite());                  setDate(c.getTime());                  return;              }              if (source.getName().equals("Second")) {                  c.set(Calendar.SECOND, getSelectedSecond());                  setDate(c.getTime());                  return;              }                dayColorUpdate(true);                if (source.getName().equals("Year")) {                  c.set(Calendar.YEAR, getSelectedYear());              } else if (source.getName().equals("Month")) {                  c.set(Calendar.MONTH, getSelectedMonth() - 1);              }              setDate(c.getTime());              flushWeekAndDay();          }            /**           * 选择日期时的响应事件           */          @Override          public void actionPerformed(ActionEvent e) {              JButton source = (JButton) e.getSource();              if (source.getText().length() == 0) {                  return;              }              dayColorUpdate(true);              source.setForeground(todayBackColor);              int newDay = Integer.parseInt(source.getText());              Calendar c = getCalendar();              c.set(Calendar.DAY_OF_MONTH, newDay);              setDate(c.getTime());              //把daySpin中的值也变了              daySpin.setValue(Integer.valueOf(newDay));          }      }        /**       * 测试方法       */      public static void main(String[] args) {          JFrame mainFrame = new JFrame("测试");          mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);          mainFrame.setSize(300, 300);          mainFrame.setLayout(new java.awt.BorderLayout());          mainFrame.add(new DateChooserJButton(), java.awt.BorderLayout.CENTER);            Toolkit kit = Toolkit.getDefaultToolkit();          Dimension screenSize = kit.getScreenSize();          int width = (int) screenSize.getWidth();          int height = (int) screenSize.getHeight();          int w = mainFrame.getWidth();          int h = mainFrame.getHeight();          mainFrame.setLocation((width - w) / 2, (height - h) / 2);            mainFrame.setVisible(true);      }  }